What is the public key token and its function?

Public Key Token is a hexidecimal string used to uniquely identify an assembly. It is a hash value generated using the assembly’s public key to ensure the uniqueness and integrity of the assembly.

The functions of Public Key Token include the following aspects:

1. Unique identifier: The Public Key Token is generated based on the public key of the assembly, thus it can uniquely identify an assembly. This is crucial for reference and version control between assemblies.
2. Integrity verification: By comparing the Public Key Token of an assembly, you can determine if the assembly has been tampered with or replaced. If the Public Key Token does not match, it indicates that the assembly has been altered.
3. Strongly named assembly: When using a strongly named assembly, the Public Key Token is generated during the assembly signing process and distributed together with the assembly. This ensures the integrity and trustworthiness of the assembly.

In summary, the Public Key Token is a mechanism used to uniquely identify and verify assemblies, ensuring the integrity and trusted source of the assembly.